Night got up from his place on the bed before flying across the room and through the glass wall to see what Nightmare Moon wanted to talk to him about. He landed on her desk which was chained against the wall near her bed as he folded his wings against his sides and sat down.
"What do you want, Nightmare Moon?" Night asked as he stared straight at her, his eyes never leaving hers.
"Now, now, watch the tone there, Night. I simply would like to talk to you since Luna got her chance to talk with you earlier," Nightmare Moon replied while batting her lashes.
"Cut the cuteness. I can already tell you hate me. Tell me what you have to say, or I'm leaving."
"Fine. I couldn't tell you this while Luna was awake because she might've killed us both," she said, her voice sounding slightly panicked.
"What are you talking about? I saw you try to kill her, Nightmare Moon! You can't just turn around and say that Luna's going to murder us both!"
"Oh, she would. Did you even bother to consider that she could be lying to you, Night? No, of course you didn't. Just because I was trying to kill her doesn't mean I'm the bad guy here! Judging by the fact that I haven't met you before today, I'm going to assume that you travel a lot. That also means that you probably couldn't know if she was telling the truth, so I'll do you a solid and tell you: she's not.
"I'm Princess Nightmare Moon, although most ponies simply call me Princess Night, hmm ironic huh? Night, Princess Night... ha! Where was I? Oh, yes. Luna was supposed to be a spirit who I made to be my assistant. Raising the moon and checking on everypony's dreams is a difficult job you know! She would be there so I could check dreams while she watched the moon to make sure it was safe.
"Luna began to change though. It began with her simply helping to raise the moon, so I would have more energy when checking dreams. Eventually, she began raising it herself. Celestia, my sister, became concerned that my assistant was doing the most important part of my job, but I saw nothing wrong with it. Alas, I wish I had seen Luna's change in mood. She began to treat me like her assistant, and she was a cruel boss.
"I did finally confront her, but it was too late. Somehow, she had drawn some of the moon's power, and when I tried to stop her, she brought us here. The moon was only meant to be my prison, but her spell was too strong because it trapped both of us for a thousand years," she nodded toward the clock on the wall behind Night, "I believe she is going to use you to escape, so she can take over Equestria once and for all!" Nightmare Moon had tears in her eyes now, "Night, you have to believe me!" she cried tears beginning to spill from her eyes. "Don't listen to Luna. We must destroy her and save my home. I will spend a thousand years here alone as long as I know that my subjects are safe!"
Night moved to beside the now weeping Nightmare Moon to comfort her. He wrapped his tail around her waist and folded his wing over her side. "It's okay. I'll figure something out, I promise," he whispered to her.
“Thank you," Nightmare Moon quietly replied.
"Of course," he mumbled. They laid in silence for a few minutes before Night realized Nightmare Moon was asleep.
Night looked at Luna who was still asleep on her bed. He didn't understand how she could be the evil pony here. Luna had been so nice to him, and she had sounded so sincere when telling him what happened with Nightmare Moon. He narrowed his eyes as he looked from one mare to another.
The stories were both so different, yet still very similar. Night had to figure out which one was true though. Either Nightmare Moon was made from a spell gone wrong, or Luna was a spirit made to help Nightmare Moon in her royal duties. They both seemed to be telling the truth, and simply looking at them gave no explanation of who was the real princess. Luna wore a crown, but Nightmare Moon was much taller than Luna which gave her a more royal appearance.
By this time, Night's head was spinning. He had no idea who was lying and who wasn't. With one last glance at Luna and Nightmare Moon, he fell asleep.
------
Luna opened her eyes slowly only to find herself lying in her bed which was floating around the room upside down. At least she knew that her spells worked and that she wouldn't wake up on the other side of the room. Her horn glowed as she magically flipped the bed over, so she could see the room right-side-up. Then she noticed Night's bed was floating above her, and it was empty.
Luna sighed. He was gone. She knew she shouldn't have gotten her hopes up thinking he would stay. He seemed like the type of pony to be constantly busy anyways. Then she saw him. He was curled up next to Nightmare Moon as though the two of them had been together for years.
Why would Night do something like that? He had seen Nightmare Moon try to murder Luna less than twenty-four hours ago. She noticed that Night began to shift in his sleep as though he were about to wake up. Luna turned away from them and began to change the bandages on her leg.
Out of the corner of her eye, Luna saw Night stand up to stretch. He opened his wings to their full length before folding them against his sides again, and then he stretched each leg in turn while yawning. Nightmare Moon rolled onto her back and looked up at him with a smile.
"Morning," Night called across the room.
"Morning. Hope you two had fun last night," Luna replied coldly.
Night gave Nightmare Moon a look of confusion, and she shrugged in return before rolling back onto her stomach.
"Luna, what are you talking about?" Nightmare Moon questioned.
"Oh, well, it's kind of strange when you fall asleep with another pony sleeping in the same room as you, and when you wake up that pony is sleeping in the same bed as the pony that just tried to murder you."
Nightmare Moon gasped. "I only tried to kill you because you began to take over my home!"
"What!?" Luna yelled. "I tried to take over your home? You were never meant to exist." Luna stood up on her bed, and Nightmare Moon repeated her action.
"I only created you, so you would be my assistant! Then you tried to take over Equestria! I should have listened to Celestia when she told me to destroy you!"
"What are you talking about, Nightmare Moon?" Luna looked at Night whom had moved and was now hovering a few feet away from Nightmare Moon. "Night, you don't seriously believe her do you?"
"I...I don't know. Both of your stories are so convincing."
"She tried to kill me!"
"Only because you tried to kill me first!"
Luna and Nightmare Moon glared at each other. Both of their horns began to glow as they prepared to destroy each other.
"Wait!" Night yelled. "There must be somepony who can tell the truth."
Nightmare Moon looked at him, "Only Celestia would know, and Luna and I are trapped here. The only way to contact her would be to magically send a letter. Even then Luna could intercept the message and reply with more lies."
"Now you're just being ridiculous, Nightmare Moon," Luna rolled her eyes. "We both know I'm the one telling the truth."
"Oh, is that so Luna."
"Would you two stop?!" Night called out looking from one mare to the other. "I will go to Equestria, and ask Celestia myself. You just need to tell me where to go."
"Canterlot," the two mares replied in unison before glaring at each other.
"Alright. I'll go ask Celestia, and you both better be alive when I return, Night finished with a stern look at the two ponies before him. Then he flew off through the wall of the moon on his way to Canterlot.